Hello,
After testing, on Android platform you can refer to the workaround to adjust the font on TabbedPage in this thread.
For iOS, after testing, Handler does not get the UITabBarController
on the iOS platform, and when using Renderer to implement this function, there will be a HandlerNotFound error that causes the program to crash. As a result, this feature is currently not available on iOS.
Best Regards,
Alec Liu.
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